I recently took the kcbs judging class because I cook on a team and thought it would give me some insight on what judges. However I was really surprised at the lack of defined standards for the 3 scoring categories. Taste was simply what tastes good to you. Tenderness was you don't want it to be tough and you don't want it to be mushy. Appearance was does it wow you and make you want to eat it. In fact there wasn't even a standard way of coming up with a score. What I mean is we weren't told to start at a 9 and deduct points or start at a 3 and add points. We were told to do it however we felt comfortable but to be consistent throughout all categories in a competition.
The class did a very thorough job of covering rules like portions and allowable types of garnish. What to look for and how to score various violations.